From my understanding Jesus is the Father. But even if He isn't, the Son could make the payment just as easily as the father/judge in a situation where a son broke the law. It would simply be a payment made by Big Brother rather than Dad.
Since Penal Substitution is in your mind "the gospel," then I am sure that the Bible would tell us
what was "paid," and
who was "paid."
You say that the demands of Justice are unbending and precise, and then change the rules when it became obvious that Jesus did not suffer the exact and precise substitution. It is as if God took the piece of straw out of His mouth, spit on the ground and said...
"Awe Shucks! He tried so hard!" Then God the Father placed His fat thumb on the scales of justice and said,
"It looks good enough for me!"
I mean, really? How far must God go outside of the requirements of Retributive Justice that you demand, and still say that the demands of justice were met out? The story keeps changing and the requirements keep shifting. It is as if it does not look anything like Penal Substitution anymore!
Forgiveness is provided for by the Cross.
Yes, the Bible teaches that we are saved by grace through faith! Not of works! That salvation cannot be earned! Yet you teach that this is wrong! God must have your sin "paid for" or He will not save. If it is a "payment" then Jesus "earned" it! It is not salvation by grace, but salvation by the merit of payment! If it is given to us, we "deserve" heaven. God does not save because he is Merciful or Forgiving... but because He (the devil, or the non-entity you personify and call "Justice") was paid off! Penal Substitution says so!
Yes, justice is satisfied. You would have a forgiveness where justice is not satisfied; in such a case God would not be just in forgiving the sinner; and you would have a different complaint.
If I go to Court for speeding, and I appeal to the judge to have mercy and forego the punishment due to my crime and they say
"No!" The fine is $200.00"! I pay that $200.00 and "justice" is satisfied. I do not need the mercy or forgiveness of the judge. In fact, any such indication of mercy or forgiveness from that judge after I pay that fine, are empty words. They showed me no mercy, and since I paid it, I do not need to be forgiven because justice has been satisfied!
Since the Bible says that God shows mercy, and that God forgives, and that the Bible NEVER says that a single sin was "paid for" on the Cross, it is a clear indication that Penal Substitution has no place in Scripture or the Gospel!
I feel really bad for you; because Penal Substitution is the gospel by which we are saved: and in rejecting it, you are rejecting salvation itself. See Jeremiah 13:17.
This is pure heresy! Instead of posting Scripture references that have nothing to do with your argument as you do, show me the passages that say.... "
If you confess with your mouth Jesus as Lord,
and believe in your heart in Penal Substitution,
you shall be saved..."! You are claiming that for the first 1500 years of Christianity, no one had the Gospel!
This is Cult territory, requiring man-made doctrines to be essential to salvation!